﻿// RankingSejmowy 1.0 - Polish parliment statistics for the masses.
// Copyright (C) 2010 Jarosław Dubrownik
//  
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//  
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//  
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
using System;
using System.Collections.Generic;
using System.Linq;
using RankingSejmowy.DAL.Statistics;
using RankingSejmowy.Model;

namespace RankingSejmowy.BLL.Import.Calculations
{
    public abstract class PartyCalculationBase : CalculationBase
    {
        protected DeputyStatistic[] GetTopDeputyStatisticsByParty(Party[] parties,
                                                                  Dictionary<Deputy, DeputyStatisticWithCount>
                                                                      dictionary)
        {
            var list = new List<DeputyStatistic>();
            foreach (var party in parties)
            {
                list.AddRange(GetTopPartyStatictis(party, dictionary));
            }

            return list.ToArray();
        }

        private DeputyStatistic[] GetTopPartyStatictis(Party party,
                                                       Dictionary<Deputy, DeputyStatisticWithCount> dictionary)
        {
            var valuePairs =
                dictionary.Where(x => x.Key.PartyCadences.Select(y => y.Party).Contains(party));
            var deputyStatistics =
                valuePairs.OrderByDescending(x => x.Value.Count).ThenBy(x => x.Key.Name).Take(10)
                    .Select(x => x.Value.DeputyStatistic).ToArray();

            DeputyStatisticHelper.UpdatePositions(deputyStatistics);
            return deputyStatistics;
        }

        public DeputyStatistic[] Calculate(Cadence cadence)
        {
            var dictionary = CalculateDeputyStatistics(cadence);
            var parties = cadence.GetParties();
            return GetTopDeputyStatisticsByParty(parties, dictionary);
            
        }
    }
}